I recently moved into a new house. I did not bring my old Dish 500 with me because there was a dish 500 with a twin LNB installed on the house already. I have not been able to get my receiver to work. I only have one receiver. When I run the Switch Test, no switches are detected. I have bought a new Dual LNB ("Digital LNBF") to no avail. I have tried to connect the LNB directly to the reciever, and I still can't get it to recognize the switch. My reciever is model 301. I took it to a friends house and it works fine off of his satellite. Please Help!